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Tow-Behind Bridge Hitch
This tow-behind "bridge hitch" sprayer works great for us. It has a heavy-duty 62-ft., self-leveling boom that's spring loaded. The hitch between the 750 gal. spray tank and tractor arches up over the boom. Boom can be raised and lowered hydraulically to operate anywhere from 24 to 46 in. off the ground. Boom wings fold up hydraulically. Spray tank rides on walking beam axles, salvaged from a New Holland spreader and fitted with 20-in. tires. A 10-ft. long truck frame mounts on the axles. The extra-strong boom was built mostly out of 2-in. sq. tubing. There's also a 15-gal. clean rinse tank that's plumbed into the booms. The sprayer is monitored by a Raven SS440 computer controller.
Total cost of building sprayer was $4,900. (Lee Thelen, 3077 Whyde Rd., St. Johns, Mich. 48879 ph 517-224-7073)

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1992 - Volume #16, Issue #3